RRB Non Technical Model Papers 7 with solutions

Question : 20 of 100

Marks: +1, -0

If A : B = 2 : 3 and B : C = 4 : 5, find A : B : C

Solution:

(2) A : B = 2 : 3 and B : C = 4 : 5

A/B=2/3

B/C=4/5

⇒A/2=B/3= ,B/4= C/5

(taking L.C.M. of 3 and 4)

⇒A/8=B/12 ,B /12=C/15

12 15

∴A/8=B/12=C/15

∴ A : B : C = 8 : 12 : 15

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